Cushion arrangement

Abstract

A cushion arrangement includes a cushion body and a dynamic damper connected to the cushion body for damping vibration of the cushion body. The dynamic damper generally includes a mass and a resilient connection between the mass and the cushion body. The mass may include liquid. A device may offer resistance to movement of the liquid responsive to vibration of the cushion body.

What is claimed is: 
     
       1. A cushion arrangement comprising: a frame;   a cushioning layer which is connected to the frame;   a dynamic damper comprising a weight and means for resiliently connecting the weight to the frame;   means for defining a first chamber between the cushioning layer and the frame which is contractable and expandable in response to movement of the cushioning layer;   means for defining a contractable and expandable second chamber which is resiliently connected to the frame;   a liquid which fills the first and second chambers; and   orifice means for connecting the first and second chambers, the orifice means comprising a first orifice and a second orifice having different effective cross-sectional areas,   wherein the liquid constitutes the weight.